What I feared most for myself at your age was not poverty, but failure.
凡事天下要考察有无的原则,必定是以众人的耳目所见所闻的实情以知有与无来作为标准的。
在任何科学事业中取得成功都需要非凡的能力、勤奋和精力。
The most profound discoveries often start with simple observations.